Răspunsuri

2014-11-08T09:51:38+02:00
Ms=md+mapa⇒ms=20+180=200g
c%= \frac{md*100}{ms} ⇒c%= \frac{20*100}{200} =10%⇒raspunsul este c)
2014-11-08T12:53:55+02:00